Syndromic surveillance summary: 18 July 2026 week 29
Updated 6 August 2026
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Reporting week 29: 13 to 19 July 2026
During week 29, syndromic ‘impact of heat’ indicators decreased, and in most syndromic systems activity had returned to seasonally expected levels, in line with the end of the recent amber heat-health alert in place across parts of England.
Remote health advice syndromic surveillance system
During week 29, NHS 111 triaged calls and online assessments for ‘heat exposure and sunburn’ decreased following the end of the Amber Heat-Health Alerts in place across parts of England during the previous week. NHS 111 triaged calls for insect bites also decreased, with activity now similar to seasonally expected levels.
Please note: the technical issue affecting NHS 111 online assessments (from 23 June 2026) was resolved on 18 July. As a result, the number of daily online assessments increased during week 29, across total online counts and all syndromic indicators. NHS 111 online data presented in this report should therefore be interpreted with some caution.
Access the remote health advice syndromic surveillance bulletins
GP in-hours syndromic surveillance system
During week 29, the GP in-hours consultation rate for ‘heat or sunstroke’ decreased but remained above expected levels. Insect bites consultations were stable but above seasonally expected levels. Gastroenteritis consultations increased slightly during week 29 and remained above expected levels.
Access the GP in-hours syndromic surveillance bulletins
GP out-of-hours syndromic surveillance system
During week 29, GP out-of-hours contacts for ‘heat or sunstroke’ and insect bites decreased with activity now below expected levels.
Access the GP out-of-hours syndromic surveillance bulletins
Emergency department syndromic surveillance system
During week 29, ED attendances for ‘heat or sunstroke’ decreased in all age groups and regions coinciding with the end of the amber heat-health alerts in place across parts of England.
Access the emergency department syndromic surveillance bulletins
Ambulance syndromic surveillance system
During week 29, daily ambulance calls for ‘impact of heat’ decreased and returned to expected levels. There were also decreases observed in calls for ‘difficulty breathing’, ‘cardiac or respiratory arrest’, ‘unconscious or passing out’, ‘collapsed with unknown problem’ and injuries.